Crop Science Journal of Natural Resources and Life Sciences Education
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Published in Crop Sci 14:603-604 (1974)
© 1974 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Fertility Restoration in Confectionery Sunflowers1

G. N. Fick and D. E. Zimmer2

Fertility restoration of male-sterile cytoplasm was discovered in two inbred lines from the confectionery sunflower (Helianthus annuus L.) variety, ‘Sundak’. Limited data suggested that two independent, complementary, dominant genes were required for restoration. Crosses of the two restorer lines with several different cytoplasmic male-sterile lines produced F1 hybrids that were resistant to rust and highly desirable agronomically.

Key Words: Cytoplasmic male-sterility • Fertility restoring genes • Hybrid sunflowers • Helianthus annuus L.

1 Cooperative investigations of the ARS-USDA and the Agricultural Experiment Station, North Dakota State University, Fargo, ND 58102. Published with the approval of the Director of the North Dakota Agricultural Experiment Station as Journal Paper No. 488.

2 Research Geneticist and Research Plant Pathologist, respectively, ARS, USDA, Fargo, ND 58102.

Received for publication January 11, 1974.




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Copyright © 1974 by the Crop Science Society of America.